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Jul
8
awarded  Nice Question
Dec
31
awarded  Popular Question
Jul
11
revised Nonlinear FEM and FindRoot
improved formatting
Jul
10
revised Nonlinear FEM and FindRoot
typos
Jul
10
asked Nonlinear FEM and FindRoot
Jun
3
accepted How to set initial guess in NDSolve
Jun
3
comment How to set initial guess in NDSolve
Thanks very much for your reply and sooty for this delayed reply, but I got some troubles in real life! Your answer seems to fit what I wanna do. I'll try with this!
Jun
3
comment How to set initial guess in NDSolve
Sorry for this delayed reply, but I got some troubles in real life! When you solve a nonlinear differential equation using a fem approach (or simply a nonlinear system using a newton method) you need a guess initial value for "each" point before starting your loop cycle. I want to do something similar using NDSolve
May
30
comment How to set initial guess in NDSolve
Thanks again for your reply. Using a shooting method, you give a "suggestion" only for the value of the function and its derivative a fixed point. I'd like to pass "all points" of the initial guess (for instance, a linear function between my bcs). Is it possible to do that?
May
30
comment How to set initial guess in NDSolve
@Szabolcs Thanks for your reply, you are right, I adjusted my code. I'd like to know how to add the initial guess without using shooting method.
May
30
revised How to set initial guess in NDSolve
added 2 characters in body
May
30
asked How to set initial guess in NDSolve
Dec
14
comment How to solve a stiff nonlinear second-order ode?
@ Michael:if you have time, should you have a look at the "original" problem? mathematica.stackexchange.com/questions/38798/…
Dec
13
comment How to solve a stiff nonlinear second-order ode?
@ Michael thanks again for your answer, it is extremely accurate!
Dec
13
accepted How to solve a stiff nonlinear second-order ode?
Dec
12
awarded  Supporter
Dec
12
comment How to solve a stiff nonlinear second-order ode?
Thanks very much for your answer. Anyway, I'm new in numerical solution of ode. What does it mean practically for me? I apologize in advance if my doubt is trivial
Dec
11
revised How to solve a stiff nonlinear second-order ode?
added 86 characters in body
Dec
11
comment How to solve a stiff nonlinear second-order ode?
@shrx : Thanks for your suggestion. I tried to do what you suggested (i.e. φ[λ_]:= a0 + a1 λ + a2 λ^2 + a3 λ^3 + a4 λ^4 /. par), but the result does not change
Dec
10
revised How to solve a stiff nonlinear second-order ode?
deleted 1 characters in body